I believe that the Canes secret to success is their identity and systems, bringing in/drafting players who fit into Brind'Amour's style of play......pressure the puck, pinch up with all 5 players, throw almost everything to the net, and skate, skate, skate. You need player buy in and I am sure that nobody sees ice time who doesn't fit into that system. It is a risk playing that way unless they do execute and support each other. The weakness will be if they will wear down.
Islanders are build a different way.